Improvement in toy chromatropes



UNITED STATES PATENT OFFICE ROBERT STEEL AND THOMAS P. MGOADDEN, OFPHILADELPHIA, PA.

IMPROVEMENT IN TOY CHROMATROPES.

Specification forming part of Letters Patent No. 170,603, dated November30, 1875; application filed May 8, 1875.

To all whom it may concern:

Be it known that we, ROBERT STEEL and THOMAS P. McOADnEN, of the cityand county of Philadelphia, in the State of Pennsylvania, have inventedan Improvement in Toys, of which the following is a specification:

Our invention relates to the combination of a disk having concentricrings with two or more segmental portions of dilferent colors to each,with a plain disk in front of the other, having a segmental portionremoved, the two disks turning loosely on the hub of a pulley, which, bymeans of a band connected with a band-Wheel, is rotated at any desiredspeed; and as the two disks, by being loose on the hub of the pulley,have no regular velocity and change their speed in relation to eachother, different parts of the colored disk are brought to view atdifferent times, and consequently there is an interchange of color ineach ring.

In the accompanying drawings, Figure l is a front view of the improvedtoy. Fig. 2 is a side view of the same.

Like letters of reference in both figures indicate the same parts.

A is a shaft, which is held in the hand by means of the handle a, orwhich may be connected with a stand or any other convenient object tohold it in the desired position. Projecting outward at right angles fromthe shaft A is a short shaft or spindle, B, on which is a pulley, O; andat a suitable distance from the shaft B is a like shaft, B, on which thebandwheel D revolves, which, by means of the band E, revolves the pulley0. On the outer end of said pulley there is a hub, 12, on which thedisks F and Or have a loose connection and are caused to revolve, beingcarried forward by the friction of the hub with their center holes, butsubject to a change in their relative velocities with each on account oftheir-looseness on the hub. The disk F has concentric rings formed ofsegmental portions 0, as shown in Fig. 1, which are of diiferent colors.The disk G has a segmental portion between the lines (1 d removed,whereby a portion of the disk F is always exposed to view but, inconsequence of the varying positions of the two disks in respect to eachother, caused by their varying velocities above described, differentparts of the disk F'are in succession exposed to view. Consequentlythere is an appearance to the vision of concentric colored rings, whichvary in their colors as there is a change produced in the relativeposition of the reduced plain disk G and the colored ring-disk F. One ormore concentric openings, 6, are in the colored disk F, to produce theappearance of a disconnection of the wheel. These may be omitted, ifdesired. 4 We are aware that tops and other spinning toys with coloreddisks are old; but

Whatwe claim as our invention is- The toy herein described, consistingof the disk F, segmental disk Gr, pulley O, huh I), and band-wheel D,all constructed and arranged to operate substantially as and for thepurpose set forth.

ROBERT STEEL.

THOS. P. MOOADDEN.

Witnesses:

THOMAS J. BEWLEY, STEPHEN USTIGK.

